Hour angle information

celestial navigation, the hour angle is the dihedral angle between the meridian plane (containing Earth's axis and the zenith) and the hour circle (containing...

geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed...

to the hour circle passing through the object. Unlike right ascension, hour angle is always increasing with the rotation of Earth. Hour angle may be considered...

and 180 degrees when the hour angle, h, is negative (morning) and the angle between 180 and 360 degrees when the hour angle, h, is positive (afternoon)...

{\displaystyle \alpha _{s}=90^{\circ }-\theta _{s}} h {\displaystyle h} is the hour angle, in the local solar time. δ {\displaystyle \delta } is the current declination...

official noon. This correction can easily be made by rotating the hour-lines by a constant angle equal to the difference in longitudes, which makes this a commonly...

rose) 6 hours (astronomical hour angle) Throughout history, carpenters and masons have known a quick way to confirm if an angle is a true right angle. It...

\tan \delta } where: ω ∘ {\displaystyle \omega _{\circ }} is the solar hour angle at either sunrise (when negative value is taken) or sunset (when positive...

and hour angle at a specific location, modify the formula for a spherical Earth. Replace φ2 with declination and longitude difference with hour angle, and...

an hour circle at any time. The hour circle is a subtype whereby it is expressed in hours as opposed to degrees, radians, or other units of angle. The...

the sunrise hour angle using the sunrise equation; Calculate the sunrise time, which is the solar noon time minus the sunrise hour angle in degree divided...

Calculate the sunset hour angle using the sunset equation; Calculate the sunset time, which is the solar noon time plus the sunset hour angle in degree divided...

Kurt Steven Angle (born December 9, 1968) is an American retired professional wrestler and collegiate wrestler. He became a gold medalist in freestyle...

average of Q over a day is the average of Q over one rotation, or the hour angle progressing from h = π to h = −π: Q ¯ day = − 1 2 π ∫ π − π Q d h {\displaystyle...

horsepower-hour (hph), a measure of energy used in the railroad industry hour angle, a measure of the angle between the meridian plane and the hour circle...

significantly in thousands of years. Mean solar time is the hour angle of the mean Sun plus 12 hours. This 12 hour offset comes from the decision to make each day...

By measuring the angle of the celestial body in the sky, the observer can get the local hour angle (LHA) of X, which is the angle subtended at P between...

altitude Equatorial coordinates α, right ascension δ, declination h, hour angle Ecliptic coordinates λ, ecliptic longitude β, ecliptic latitude Galactic...

astronomy, the parallactic angle is the angle between the great circle through a celestial object and the zenith, and the hour circle of the object. It...

the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. The declination angle is measured...

positions of navigational stars — expressed as declination and sidereal hour angle — are often rounded to the nearest degree. In addition to tables, star...

sight must be known so that the celestial position i.e. the Greenwich Hour Angle (Celestial Longitude - measured in a westerly direction from Greenwich)...

definition is given below. Urban & Seidelmann 2013, "Glossary" s.v. hour angle, hour circle, sidereal time. Urban & Seidelmann 2013, p. 78. IERS 2013. Bartlett...

to 24h. It is important not to confuse sidereal hour angle with the astronomical concept of hour angle, which measures the angular distance of an object...

train and plane schedules.) Afternoon Analemma Dipleidoscope Hour angle Solar azimuth angle The 29th edition of the U.S. GPO Government Printing Office...

In 1931, Longines collaborated with Charles Lindbergh to introduce the Hour Angle aviation watch. In 1937, P.V.H. Weems again collaborated with Longines...

Apparent solar time can be obtained by measurement of the current position (hour angle) of the Sun, as indicated (with limited accuracy) by a sundial. Mean solar...

easier for pilots. First produced in 1931, they called it the "Lindbergh Hour Angle watch", and it remains in production today. In 1929, Lindbergh became...

azimuth Zn must be computed. The local hour angle, LHA, is the difference between the AP longitude and the hour angle of the observed object. It is always measured...